<template>
	<div>
		<div class="search">
			<input v-model="keyword" class="search-input" type="text" placeholder="请输入城市名或拼音" />
		</div>
		<div class="search-content" ref="search" v-show="keyword">
			<ul>
				<li class="search-item border-bottom" v-for="item of list" :key="item.id" @click="handleCityClick(item.name)">
					{{item.name}}
				</li>
				<li class="search-item border-bottom" v-show="hasNoData">	没有找到匹配项
				</li>
			</ul>
		</div>
	</div>
</template>

<script>
	import BScroll from 'better-scroll'
	import { mapMutations } from 'vuex'
	export default {
		name: 'CitySearch',
		props: {
			cities: Object
		},
		data: function(){
			return {
				keyword: '',
				list: [],
				timer: null
			}
		},
		methods: {
			handleCityClick: function(city){
				this.changeCity(city)
				this.keyword = ''
				this.$router.push('/')
			},
			...mapMutations({
				changeCity: 'changeCity'
			})
		},
		computed: {
			hasNoData: function(){
				return !this.list.length
			}
		},
		watch: {
			keyword () {
				if(this.timer){
					clearTimeout(this.timer)
				}
				if(!this.keyword){
					this.list = []
					return
				}
				this.timer = setTimeout( () => {
					const result = []
					for(let i in this.cities){
						this.cities[i].forEach( (value) => {
							if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
								result.push(value)
							}
						})
					}
					this.list = result
				}, 100)
			}
		},
		mounted: function(){
			this.scroll = new BScroll(this.$refs.search, {
				click: true
			})
		}
	}
</script>

<style lang="stylus" scoped>
	@import '~styles/varibles.styl'
	.search
		height: .72rem
		padding: 0 .2rem
		background: $bgColor
		.search-input
			box-sizing: border-box
			width: 100%
			height: .62rem
			padding:0 .1rem
			line-height: .62rem
			text-align: center
			border-radius: .06rem
			color: #666
	.search-content
		z-index: 1
		overflow: hidden
		position: absolute
		top: 1.58rem
		left: 0
		right: 0
		bottom: 0
		background: #eee
		.search-item
			height: .62rem
			line-height: .62rem
			padding-left: .2rem
			background: #fff
			color: #666
</style>